-
ADA4841-1/ADA4841-2: Low Power, Low Noise and Distortion, Rail-to-Rail Output Amplifiers Data Sheet (Rev. G)9/28/2015PDF659 K
-
ADA4841-2KGD: Known Good Die Data Sheet (Rev. A)9/28/2015PDF183 K
Alternative Parts
Overview
Features and Benefits
- Low power: 1.1 mA/amp
- Low wideband noise
- 2.1 nV/√Hz
- 1.4 pA/√Hz
- Low 1/f noise
- 7 nV/√Hz @ 10 Hz
- 13 pA/√Hz @ 10 Hz
- Low distortion: −105 dBc @ 100 kHz, VO = 2 V p-p
- High speed
- 80 MHz, −3 dB bandwidth (G = +1)
- 12 V/μs slew rate
- 175 ns settling time to 0.1%
- Low offset voltage: 0.3 mV maximum
- Rail-to-rail output
- Power down
- Wide supply range: 2.7 V to 12 V
Product Details
The ADA4841-2 is a unity gain stable, low noise and distortion, rail-to-rail output amplifier that has a quiescent current of 1.5 mA maximum. In spite of its low power consumption, this amplifier offers low wideband voltage noise performance of 2.1 nV/√Hz and 1.4 pA/√Hz current noise, along with excellent spurious-free dynamic range (SFDR) of −105 dBc at 100 kHz. To maintain a low noise environment at lower frequencies, the amplifier has low 1/f noise of 7 nV/√Hz and 13 pA/√Hz at 10 Hz.
The ADA4841-2 output can swing to less than 50 mV of either rail. The input common-mode voltage range extends down to the negative supply. The ADA4841-2 can drive up to 10 pF of capacitive load with minimal peaking.
The ADA4841-2 provides the performance required to efficiently support emerging 16-bit to 18-bit ADCs and is ideal for portable instrumentation, high channel count, industrial measurement, and medical applications. The ADA4841-1 is ideally suited to drive the AD7685/AD7686, 16-bit PulSAR ADCs.
The ADA4841-2 package features RoHS compliant lead finishes. The amplifier is rated to work over the industrial temperature range (−40°C to +125°C).
Applications
- Low power, low noise signal processing
- Battery-powered instrumentation
- 16-bit PulSAR® ADC drivers
Product Categories
Markets and Technologies
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (2)
Documentation & Resources
-
Understanding PulSAR ADC Support Circuitry7/30/2020
-
AN-1384: Modular Data Acquisition (DAQ) Footprint Using the AD7768/AD7768-4 (Rev. A)5/3/2019PDF500 K
-
AN-1439: One-Stage Amplifier Design Consideration of a High Fidelity System (Rev. 0)1/3/2017PDF323 K
-
AN-1429: Design Considerations and Solutions for Headphone Drivers in Mobile Phones (Rev. 0)10/14/2016PDF215 K
-
AN-402: Replacing Output Clamping Op Amps with Input Clamping Amps2/14/2015PDF55 kB
-
AN-581: Biasing and Decoupling Op Amps in Single Supply Applications (Rev. 0)2/14/2015PDF166 kB
-
UG-1224: Amplifier Mezzanine Card for ADC Drivers (Rev. 0)1/9/2019PDF821 K
-
UG-886: Universal Evaluation Board for Dual High Speed Op Amps Offered in 8-Lead MSOP10/26/2015PDF155 K
-
UG-128: Universal Evaluation Board for Dual High Speed Op Amps in SOIC Packages4/19/2010PDF208 kB
-
MT-053: Op Amp Distortion: HD, THD, THD + N, IMD, SFDR, MTPR2/14/2015PDF104 kB
-
MT-052: Op Amp Noise Figure: Don't Be Misled2/14/2015PDF60 kB
-
MT-050: Op Amp Total Output Noise Calculations for Second-Order System2/14/2015PDF38 kB
-
MT-049: Op Amp Total Output Noise Calculations for Single-Pole System2/14/2015PDF40 kB
-
MT-048: Op Amp Noise Relationships: 1/f Noise, RMS Noise, and Equivalent Noise Bandwidth2/14/2015PDF81 kB
-
MT-047: Op Amp Noise2/14/2015PDF72 kB
-
MT-060: Choosing Between Voltage Feedback and Current Feedback Op Amps2/14/2015PDF62 kB
-
MT-059: Compensating for the Effects of Input Capacitance on VFB and CFB Op Amps Used in Current-to-Voltage Converters2/14/2015PDF69 kB
-
MT-033: Voltage Feedback Op Amp Gain and Bandwidth2/14/2015PDF251 kB
-
MT-058: Effects of Feedback Capacitance on VFB and CFB Op Amps2/14/2015PDF66 kB
-
MT-056: High Speed Voltage Feedback Op Amps2/3/2009PDF109 kB
-
MT-032: Ideal Voltage Feedback (VFB) Op Amp12/11/2008PDF65 kB
-
SAR ADC & Driver Quick-Match Guide9/13/2013PDF251 kB
-
High Speed Amplifiers Selection Table2/27/2008PDF77 kB
Tools & Simulations
LTspice
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Models for the following parts are available in LTspice:
ADA4841
Precision ADC Driver Tool
The Precision ADC Driver Tool is a web application that simulates the performance of precision ADC and driver combinations. Potential issues with driver selection, kickback settling, and distortion are flagged, and design tradeoffs can be quickly evaluated. Simulations and calculations include system noise, distortion, and settling of the ADC input
SPICE Models
CIR
ADA4841 SPICE Macro Model
7.29 K
Design Tools
Analog Filter Wizard
Use the Analog Filter Wizard to design low-pass, high-pass, or band-pass filters with actual op amps in minutes. As you progress through the design process, you can observe the characteristics of your filter design from ideal specifications to real world circuit behavior. Quickly evaluate the tradeoffs in op amp specifications - including gain-bandwidth, noise, and supply current – to determine the best filter design for your requirements.
Analog Photodiode Wizard
Use Photodiode Wizard to design a transimpedance amplifier circuit to interface with a photodiode. Select a photodiode from the library included in the tool, or enter custom photodiode specifications. Quickly observe tradeoffs between Bandwidth, Peaking (Q), and ENOB/SNR. Modify circuit parameters, and immediately see results in plots for pulse response, frequency response, and noise gain.
VRMS/dBm/dBu/dBV calculators
A utility to convert between standard units of power measurement and signal strength.
Power Dissipation vs Die Temp
This tool estimates die temperature and power dissipation based on the supply voltages, ambient temperature, load characteristics, and package thermal data.
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| ADA4841-2KGD-PT | Material Declaration | Reliability Data | CHIPS OR DIE | |
| ADA4841-2KGD-WP | Material Declaration | Reliability Data | CHIPS OR DIE | |
| ADA4841-2YCPZ-R7 | Material Declaration | Reliability Data | 8-Lead LFCSP (3mm x 3mm w/ EP) | |
| ADA4841-2YCPZ-RL | Material Declaration | Reliability Data | 8-Lead LFCSP (3mm x 3mm w/ EP) | |
| ADA4841-2YRMZ | Material Declaration | Reliability Data | 8-Lead MSOP | |
| ADA4841-2YRMZ-R7 | Material Declaration | Reliability Data | 8-Lead MSOP | |
| ADA4841-2YRMZ-RL | Material Declaration | Reliability Data | 8-Lead MSOP | |
| ADA4841-2YRZ | Material Declaration | Reliability Data | 8-Lead SOIC | |
| ADA4841-2YRZ-R7 | Material Declaration | Reliability Data | 8-Lead SOIC | |
| ADA4841-2YRZ-RL | Material Declaration | Reliability Data | 8-Lead SOIC | |
| Wafer Fabrication Data |
PCN-PDN Information
Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.
Support & Discussions
ADA4841-2 Discussions
Sample & Buy
Ordering FAQs
See our Ordering FAQs for answers to questions about online orders, payment options and more.
Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
List Pricing
(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Lead Times
Please see the latest communication from our CCO regarding lead times.
Sampling
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.
Evaluation Boards
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.